686391628

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1\times {\mathrm{1223}}^1$

素因数の和:1534

約数の個数: 48

約数和(自身を含む): 1330027776

約数和(自身を除く): 643636148

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 251, 502, 559, 1004, 1118, 1223, 2236, 2446, 3263, 4892, 6526, 10793, 13052, 15899, 21586, 31798, 43172, 52589, 63596, 105178, 140309, 210356, 280618, 306973, 561236, 613946, 683657, 1227892, 1367314, 2734628, 3990649, 7981298, 13199839, 15962596, 26399678, 52799356, 171597907, 343195814, 686391628]

約数ペア:

[(1, 686391628), (2, 343195814), (4, 171597907), (13, 52799356), (26, 26399678), (43, 15962596), (52, 13199839), (86, 7981298), (172, 3990649), (251, 2734628), (502, 1367314), (559, 1227892), (1004, 683657), (1118, 613946), (1223, 561236), (2236, 306973), (2446, 280618), (3263, 210356), (4892, 140309), (6526, 105178), (10793, 63596), (13052, 52589), (15899, 43172), (21586, 31798)]